Damp Rid, 10.5 OZ Bathroom, Refillable Moisture Absorber System, Hangs In Holster From Side Of Toilet Tank, Prevents Mildew, Mold & Musty Odors By Drying The Air To A Level Where Mildew & Mold Cannot Grow, Odorless, Non Toxic, Can Be Refilled & Reused.